package edu.sctu.practice.class02.yangyuran.test19;

/**
 * Created by Administrator on 2015/10/15.
 */
public class Round extends Graphical {

    public double area() {

        double area;
        radius = 3.0;
        return area = radius * radius * pi;
    }


    public static void main(String[] args) {

        Round round = new Round();
        double i = round.area();
        System.out.println("圆面积为：" + i);
    }
}
